2021年4月西方经济学
卷面总分:100分
试卷年份:2021.04
是否有答案:有
作答时间: 120分钟
正常商品和低档商品的判断标准是()
- A、正常商品需求的价格弹性系数大于0,低档商品需求的价格弹性系数小于0
- B、正常商品需求的收入弹性系数大于0,低档商品需求的收入弹性系数小于0
- C、正常商品需求的交叉弹性系数大于0,低档商品需求的交叉弹性系数小于0
- D、正常商品供给的价格弹性系数大于0,低档商品供给的价格弹性系数小于0
Fatal error: Uncaught Error: Call to a member function fetch_array() on boolean in /www/wwwroot/www.shzkw.org/phpcms/libs/classes/db_mysqli.class.php:153
Stack trace:
#0 /www/wwwroot/www.shzkw.org/phpcms/model/get_model.class.php(30): db_mysqli->fetch_next()
#1 /www/wwwroot/www.shzkw.org/caches/caches_template/default/content/yzb_exam_detail.php(153): get_model->fetch_next()
#2 /www/wwwroot/www.shzkw.org/phpcms/modules/yzb/exam.php(291): include('/www/wwwroot/ww...')
#3 /www/wwwroot/www.shzkw.org/phpcms/libs/classes/application.class.php(31): exam->detail()
#4 /www/wwwroot/www.shzkw.org/phpcms/libs/classes/application.class.php(19): application->init()
#5 /www/wwwroot/www.shzkw.org/phpcms/base.php(134): application->__construct()
#6 /www/wwwroot/www.shzkw.org/phpcms/base.php(85): pc_base::_load_class('application', 'libs/classes', 1)
#7 /www/wwwroot/www.shzkw.org/phpcms/base.php(76): pc_base::load_sys_class('application')
#8 /www/wwwroot/www.shzkw.org/index.php(15): pc_base::creat_app()
#9 {main}
thrown in /www/wwwroot/www.shzkw.org/phpcms/libs/classes/db_mysqli.class.php on line 153